The Ring,piston, cataloged under National Stock Number 2815-01-025-0922, is classified within Federal Supply Class 2815 (Diesel Engines and Components) of the Engines, Turbines, and Components group. The manufacturer of record is Emerson Power Transmission Corporation Dba Emerson Div Emerson Power Transmission Division. Government technical data includes 6 specifications, cited from the U.S. Government catalog. The record lists 1 manufacturer part number for this item, enabling identification through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 2815-01-025-0922 |
| Primary Part Number | 740-2-00013-5 |
| Item Name | Ring,piston |
| FSC / FSG | 2815 / 28 — Diesel Engines and Components |
| Manufacturer | Emerson Power Transmission Corporation Dba Emerson Div Emerson Power Transmission Division |
| Status | ACTIVE |
| Cross-Sectional Shape Style | MULTI-PIECE SCRAPER, CONVEX FACE , W/EXPANDER |
| Joint Style | STEP JOINT |
| Radial Wall Thickness | 0.1500 INCHES NOMINAL IN |
| Ring Style | CONCENTRIC |
| Standard Bore Diameter | 12.750 INCHES IN |
| Material | STEEL OVERALL |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| 740-2-00013-5 PRIMARY | Emerson Power Transmission Corporation Dba Emerson Div Emerson Power Transmission Division (USA) |
| Reference | Meaning |
|---|---|
| 1224MS | 5/9 Secondary reference Muskegon Piston Ring Co Muskegon Products Div |
NSN 2815-01-025-0922 is a Ring,piston, manufactured by Emerson Power Transmission Corporation Dba Emerson Div Emerson Power Transmission Division, classified under FSC 2815, Diesel Engines and Components. Status: active.
NSN 2815-01-025-0922 has 1 manufacturer part number on file: 740-2-00013-5 (Emerson Power Transmission Corporation Dba Emerson Div Emerson Power Transmission Division).
Key specifications for 740-2-00013-5: Overall Width: 0.0980 INCHES NOMINAL IN; Cross-Sectional Shape Style: MULTI-PIECE SCRAPER, CONVEX FACE , W/EXPANDER; Joint Style: STEP JOINT; Radial Wall Thickness: 0.1500 INCHES NOMINAL IN. 6 specifications are documented in the U.S. Government catalog.
No hazard code in the DLA record (HMIC N). Hazard information on this page is shown exactly as it appears in the DLA record.
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-16.
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-18.